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    mnorthenor's Avatar
    mnorthenor Posts: 1, Reputation: 1
    New Member

    Aug 19, 2014, 07:14 AM
    Math word problem
    Jerome swapped the digits of a two-digit natural number, and the new number he got was 30 less than the original number. What could the original number have been
    ebaines's Avatar
    ebaines Posts: 12,130, Reputation: 1307

    Aug 19, 2014, 12:09 PM
    If you swap the digits the difference between the new and old number must be a multiple of 9. Hence it can't be 30, so there is no solution to the problem as stated.

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